CCD-TR913E, CCD-TR950E - Sony Movie Service Manual (repair manual). Page 122

5-42

(75

Ω

)

600

Ω

Video

L

R

Audio

AUDIO OUT

L

47k

Ω

47k

Ω

 (1-249-437-11)

600

Ω

 

(270

Ω

 (1-249-410-11) + 330

Ω

 

(1-249-411-11))

Pattern generator

Audio oscillator

Main unit

Attenuator

Audio level meter

VIDEO OUT

R

IR receiver jig

Fig. 5-3-18.

Mode

VTR recording

Signal

Audio signal :
400Hz, –7.5dBs : L or R of AUDIO

terminal

Video signal :
Color bar signal : VIDEO terminal

Measurement Point

AUDIO L terminal and AUDIO R
terminal of IR receiver jig
(Terminated at 47k

Ω

)

Measuring Instrument

Audio level meter

Adjustment Page

F

Adjustment Address

67

Specified Value

Signal level: –7.5 ± 2.0 dBs
Level difference of L and R: Below 2dB

Connection of Equipment
Connect the measuring device as shown in the following figure,
and adjust.

Preparations only for the model without REC switch:
1)

Select page: 0, address: 01, and set data: 01.

2)

Select page: D, address: 14, after memorizing the data, set the
bit value of bit1 to “1”. (Refer to “4-3, 3. Bit value
discrimination” of “5-4. Service Mode”).

3)

Select page: D, address: 15, after memorizing the data, set the
bit value of bit7 to “0”.

4)

Insert a tape, and set to recording mode. (Use the wireless
remote commander of 8mm VCR.)

Adjusting method:
1)

Select page: 0, address: 01, and set data: 01.

2)

Connect the audio level meter to the AUDIO L terminal of the
IR receiver jig.

3)

Select page: F, address: 67, change the data and set the 400Hz
audio signal level to the specified value.

4)

Press the PAUSE button of the adjustment remote commander.

5)

Connect the audio level meter to the AUDIO R terminal of the
IR receiver jig.

6)

Check that the 400Hz audio signal level is within the specified
value. If outside, repeat from step 2).

7)

Select page: 0, address: 01, and set data: 00.

Processing after completed adjustment only for the model
without REC switch:
1)

Select page: 0, address: 01, and set data: 01.

2)

Select page: D, address: 14, and set the data memorized at step
2) of “Preparations only for the model without REC switch”.

3)

Press the PAUSE button of the adjustment remote commander.

4)

Select page: D, address: 15, and set the data memorized at step
3) of “Preparations only for the model without REC switch”.

5)

Press the PAUSE button.

6)

Select page: 0, address: 01, and set data: 00.